Electrical control cabinet for thermal power plant

Abstract

The present invention relates to the technical field of control cabinets, and provides an electrical control cabinet for a thermal power plant, comprising an electrical control cabinet, wherein the electrical control cabinet is provided with a plurality of ventilation openings, a heat absorption plate is fixedly mounted on an inner wall of the electrical control cabinet, a heat dissipation structure is mounted on the heat absorption plate, four connecting bases are symmetrically and fixedly mounted on a top side of the electrical control cabinet, a ventilation structure is mounted on the four connecting bases, two mounting frames are symmetrically and fixedly mounted on the top side of the electrical control cabinet, and an anti-snow structure is mounted on the two mounting frames. According to the present invention, heat dissipation is achieved by means of a combination of heat conduction and air cooling, thereby further improving the heat dissipation effect of the electrical control cabinet. When the present invention is used in winter, if the ambient temperature is low, a fan and an electric heating tube can be turned on to heat internal equipment within the electrical control cabinet, so as to prevent any impact on the operation of the equipment due to excessively low temperatures; when the present invention is used outdoors, a protective metal roof can be employed for snow protection. Furthermore, the present invention also includes a snow removal function.

Description

An electrical control cabinet for a thermal power plant Technical Field

[0001] This invention relates to the field of control cabinet technology, specifically to an electrical control cabinet for a thermal power plant. Background Technology

[0002] Electrical control cabinets are one of the important pieces of equipment in thermal power plants. They are mainly used to control and monitor the operation of electrical systems. They are usually composed of multiple electrical components and assemblies, including circuit breakers, contactors, relays, PLCs, etc. They can realize remote control, automated control and protection functions of electrical systems. They can precisely control and adjust electrical systems according to the operating status and needs of thermal power plants to ensure the stable operation and safety of electrical systems.

[0003] In existing technologies, the internal equipment of electrical control cabinets in thermal power plants typically has certain temperature requirements. To prevent the equipment from overheating during operation, it is usually equipped with a fan-powered cooling function. However, fan-powered cooling alone is not ideal. If used in excessively hot weather, the heat inside the control cabinet cannot be dissipated in time, and the equipment is prone to overheating damage if it operates in a high-temperature environment for a long time. If the ambient temperature is too low, the conductivity of the electronic components inside the electrical control cabinet may decrease, affecting the operation of the equipment. In order to enable electrical control cabinets in thermal power plants to meet the needs of different environments, a new type of electrical control cabinet for thermal power plants is needed to meet people's needs.

[0004] Summary of the Invention

[0005] This invention provides an electrical control cabinet for a thermal power plant to solve the technical problems of the prior art mentioned in the background section.

[0006] To address the aforementioned problems, this invention discloses an electrical control cabinet for a thermal power plant, comprising an electrical control cabinet with several ventilation openings, a heat-absorbing plate fixedly installed on the inner wall of the electrical control cabinet, a heat dissipation structure installed on the heat-absorbing plate, four connecting seats symmetrically fixedly installed on the top side of the electrical control cabinet, ventilation structures installed on the four connecting seats, and two fixed frames symmetrically fixedly installed on the top side of the electrical control cabinet, with snow-proof structures installed on the two fixed frames.

[0007] Preferably, the heat dissipation structure includes multiple heat-conducting plates, which are fixedly installed on one side of the heat-absorbing plate. Heat-conducting pipes are fixedly installed on the heat-conducting plates. A U-shaped connecting frame is fixedly installed on one side of the electrical control cabinet, and a water tank is fixedly installed on one side of the U-shaped connecting frame. One end of the heat-conducting pipe passes through the electrical control cabinet and is fixedly installed on one side of the water tank, connecting the heat-conducting pipe to the water tank. The other end of the heat-conducting pipe passes through the electrical control cabinet and is fixedly installed on a water pump. A water pump is fixedly installed on the water pump, connecting the water pump to the water tank. A temperature-conducting plate is fixedly installed on the inner wall of the water tank. Two semiconductor cooling chips are fixedly installed on one side of the temperature-conducting plate, with the cooling surfaces of both semiconductor cooling chips in contact with the temperature-conducting plate. A heat-conducting copper plate is movably installed on one side of each of the two semiconductor cooling chips, with the heating surfaces of the two semiconductor cooling chips in contact with the two heat-conducting copper plates respectively. Multiple heat dissipation pipes are fixedly installed on one side of each of the two heat-conducting copper plates, with multiple heat dissipation fins fixedly installed on the heat dissipation pipes.

[0008] Preferably, the ventilation structure includes two threaded rods with opposite threads. Two connecting seats located on the same side are rotatably mounted on the same threaded rod. A driving device is used to drive the two threaded rods to rotate. The same air outlet box is threaded onto the two threaded rods. The air outlet box is slidably installed in a corresponding ventilation opening. The inner wall of the air outlet box has a first air outlet groove and a second air outlet groove. The second air outlet groove corresponds to the ventilation opening. One end of two telescopic corrugated pipes is fixedly installed on one side of the air outlet box. The other end of the two telescopic corrugated pipes is fixedly installed with the same air guide box. Both telescopic corrugated pipes are connected to the air guide box. The two telescopic corrugated pipes are respectively connected to the first air outlet groove and the second air outlet groove. The air duct is rotatably installed inside the air duct box. The air duct has a first air outlet, a second air outlet, a third air outlet, and a connecting hole. The connecting hole is connected to the first air outlet, the second air outlet, and the third air outlet. The second air outlet is connected to a telescopic corrugated pipe near the second air outlet slot. The first air outlet is adapted to the telescopic corrugated pipe near the first air outlet slot. A diverter pipe is fixedly installed on one side of the air duct box and is connected to the air duct box. The third air outlet is connected to the diverter pipe. An air guide shroud is fixedly installed at one end of the diverter pipe and is fixedly installed on one side of the water tank. The semiconductor cooling chip and heat dissipation fins are located inside the air guide shroud and are connected to the diverter pipe. A U-shaped mounting bracket is fixedly installed on the top side of the U-shaped connecting bracket, and a fan is fixedly installed on the top side of the U-shaped mounting bracket. The output end of the fan is connected to the connecting hole.

[0009] Preferably, the snow-proof structure includes multiple guide rods, which are fixedly installed on the inner wall of the fixed frame. Movable support rods are slidably installed on the guide rods. A metal protective canopy is fixedly installed on the top side of the movable support rod. A connecting plate is fixedly installed on one side of the movable support rod. Multiple arc-shaped abutments are fixedly installed on one side of the connecting plate. A compression cylinder is fixedly installed on one side of the air outlet box. A fixed frame is fixedly installed at the output end of the compression cylinder. A roller is rotatably installed on the fixed frame. The roller is located on one side of the arc-shaped abutment. An electric heating tube is fixedly installed on the inner wall of the connecting hole.

[0010] Preferably, the movable support rod has two guide sliding holes, and two guide rods are slidably installed in the two guide sliding holes respectively; a spring is slidably sleeved on the guide rod, one end of the spring is fixedly installed on the inner wall of the fixed frame, and the other end of the spring is fixedly installed on one side of the movable support rod.

[0011] Preferably, an adjusting cylinder is fixedly installed on the top side of the U-shaped mounting bracket, a linkage rack is fixedly installed on the output end of the adjusting cylinder, and an adjusting gear ring is fixedly installed on the air guide pipe, the adjusting gear ring meshing with the linkage rack.

[0012] Preferably, the drive device includes a support frame, on which a motor is fixedly mounted. A first pulley is fixedly mounted at the output end of the motor, a belt is driven onto the first pulley, and two second pulleys are driven onto the belt. Both second pulleys are rotatably mounted on the bottom side of the water tank. A linkage shaft is fixedly mounted on each of the two second pulleys, and both linkage shafts are rotatably mounted on the water tank. Multiple blades are fixedly mounted on each linkage shaft, and the blades are located inside the water tank. A first bevel gear is fixedly mounted at one end of the linkage shaft, and a second bevel gear is fixedly mounted at one end of the positive and negative threaded rod. The second bevel gear meshes with the first bevel gear.

[0013] Preferably, the air guide box has two guide holes, the second air outlet is connected to the guide holes, and the first air outlet is adapted to the guide holes;

[0014] Both sides of the air outlet box are fixedly installed with mounting bases, and each mounting base has a threaded hole. Two positive and negative threaded rods are respectively threaded into the two threaded holes.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In this invention, through the arrangement of heat pipes, fans, and other structures, the heat generated inside the electrical control cabinet during use can be absorbed by the heat-absorbing plate, heat-conducting fins, and heat pipes. By turning on the water pump, the water in the tank can circulate through the heat pipes, carrying away the heat and achieving a heat dissipation effect. By turning on the semiconductor cooling chip, the water in the tank can be cooled, ensuring that the water can continuously meet the heat dissipation needs. Furthermore, the fan can be turned on during this process, blowing air towards the heat dissipation pipes and fins to lower the temperature of the heating surface of the semiconductor cooling chip, thereby improving the cooling effect of its cooling surface and further accelerating the cooling of the water in the tank. On the other hand, the airflow will quickly circulate through the two ventilation openings under the action of the fan, accelerating the airflow inside the electrical control cabinet for heat exchange. Through the combination of heat conduction and air cooling, the heat dissipation effect of the electrical control cabinet is further improved.

[0017] In this invention, by setting up a motor, turning on the motor can cause the blades to stir the water in the water tank, allowing the water in the water tank to flow and fully contact the temperature-conducting plate, thereby improving the cooling effect of the water. In addition, during the process, the air outlet box will move back and forth at the ventilation port, so as to blow the external air evenly into the ventilation port, thereby improving the heat exchange effect.

[0018] In this invention, the metal protective canopy and electric heating tubes allow for several advantages. During winter use, if the ambient temperature is low, the fan and heating tubes can be activated to heat the airflow. The hot air then circulates through the vents to heat the internal equipment, preventing excessively low temperatures from affecting its operation. When used outdoors, the metal protective canopy can block snow. If excessive snow accumulates on its surface, the regulating cylinder can be activated to switch the air duct, allowing hot air to flow through the first air outlet to the bottom of the metal protective canopy, heating it and accelerating the melting of snow. The motor also allows the air outlet box to reciprocate, providing uniform heating. During this process, the squeezing cylinder activates the rollers to contact the connecting plate. The reciprocating movement of the air outlet box causes the metal protective canopy to sway, shaking off the snow and further improving the snow removal effect.

[0019] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0020] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0021] Figure 1 is a schematic diagram of the structure of an electrical control cabinet for a thermal power plant proposed in this invention;

[0022] Figure 2 is a bottom view of the electrical control cabinet of a thermal power plant proposed in this invention.

[0023] Figure 3 is a schematic diagram of the heat absorption plate part of the electrical control cabinet of a thermal power plant proposed in this invention;

[0024] Figure 4 is a schematic diagram of the connection structure of the heat-conducting pipe part of the electrical control cabinet of a thermal power plant proposed in this invention.

[0025] Figure 5 is a cross-sectional view of the water tank section of an electrical control cabinet for a thermal power plant proposed in this invention.

[0026] Figure 6 is a schematic diagram of the connection structure of the air outlet box part of the electrical control cabinet of a thermal power plant proposed in this invention.

[0027] Figure 7 is a schematic diagram of the semiconductor cooling chip portion of an electrical control cabinet for a thermal power plant proposed in this invention;

[0028] Figure 8 is a schematic diagram of the air duct section of an electrical control cabinet for a thermal power plant proposed in this invention.

[0029] Figure 9 is a schematic diagram of the air guide box part of the electrical control cabinet of a thermal power plant proposed in this invention.

[0030] In the diagram: 100, Electrical control cabinet; 101, Ventilation vent; 200, Heat absorber plate; 201, Heat-conducting sheet; 202, Heat-conducting pipe; 203, U-shaped connecting frame; 204, Water tank; 205, Water pump; 206, Pumping pipe; 207, Temperature-conducting plate; 208, Semiconductor cooling chip; 209, Heat-conducting copper plate; 210, Heat dissipation pipe; 211, Heat dissipation fins; 212, Support frame; 213, Motor; 214, First pulley; 215, Belt; 216, Second pulley; 217, Linkage shaft; 218, Blade; 300, Connecting seat; 301, Threaded rod; 302, Air outlet box; 303, Telescopic corrugated pipe; 304, Air guide box; 305, Air guide pipe; 306, First air outlet; 307, Second air outlet. Air outlet; 308, Third air outlet; 309, Diverter pipe; 310, Air guide hood; 311, First air outlet slot; 312, Second air outlet slot; 313, U-shaped mounting bracket; 314, Fan; 315, Guide hole; 316, Mounting base; 317, Threaded hole; 318, First bevel gear; 319, Second bevel gear; 320, Connecting hole; 400, Fixed frame; 401, Guide rod; 402, Movable support rod; 403, Metal protective canopy; 404, Connecting plate; 405, Arc-shaped stop block; 406, Extrusion cylinder; 407, Fixed bracket; 408, Roller; 409, Guide slide hole; 410, Spring; 411, Electric heating element; 412, Adjusting cylinder; 413, Linkage rack; 414, Adjusting gear ring. Detailed Implementation

[0031] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0032] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions and features of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0033] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0034] The present invention provides the following embodiments.

[0035] Example 1: This embodiment of the invention provides an electrical control cabinet for a thermal power plant, as shown in Figures 1-2. It includes an electrical control cabinet 100 with two ventilation openings 101. A heat-absorbing plate 200 is fixedly installed on the inner wall of the electrical control cabinet 100, and a heat dissipation structure is installed on the heat-absorbing plate 200. Four connecting seats 300 are symmetrically fixedly installed on the top side of the electrical control cabinet 100, and ventilation structures are installed on the four connecting seats 300. Two fixing frames 400 are symmetrically fixedly installed on the top side of the electrical control cabinet 100, and snow-proof structures are installed on the two fixing frames 400.

[0036] The heat dissipation structure includes multiple heat-conducting plates 201, which are fixedly installed on one side of the heat-absorbing plate 200. Heat-conducting pipes 202 are fixedly installed on the heat-conducting plates 201. A U-shaped connecting bracket 203 is fixedly installed on one side of the electrical control cabinet 100, and a water tank 204 is fixedly installed on one side of the U-shaped connecting bracket 203. One end of the heat-conducting pipe 202 passes through the electrical control cabinet 100 and is fixedly installed in the water tank 204. On one side, the heat pipe 202 is connected to the water tank 204. The other end of the heat pipe 202 passes through the electrical control cabinet 100 and is fixedly installed with a water pump 205. A water pump 206 is fixedly installed on the water pump 205 and is connected to the water tank 204. A temperature-conducting plate 207 is fixedly installed on the inner wall of the water tank 204. Two semiconductor cooling chips 208 are fixedly installed on one side of the temperature-conducting plate 207. The cooling surfaces of the two semiconductor cooling chips 208 are in contact with the temperature-conducting plate 207. A heat-conducting copper plate 209 is movably installed on one side of each of the two semiconductor cooling chips 208. The heating surfaces of the two semiconductor cooling chips 208 are in contact with the two heat-conducting copper plates 209 respectively. Multiple heat dissipation pipes 210 are fixedly installed on one side of each of the two heat-conducting copper plates 209. Multiple heat dissipation fins 211 are fixedly installed on the heat dissipation pipes 210.

[0037] The ventilation structure includes two threaded rods 301 with opposite threads. Two connecting seats 300 located on the same side are rotatably mounted on the same threaded rod 301. A driving device is used to drive the two threaded rods 301 to rotate. The same air outlet box 302 is threaded onto the two threaded rods 301. The air outlet box 302 is slidably mounted in a corresponding vent 101. The inner wall of the air outlet box 302 has a first air outlet groove 311 and a second air outlet groove 312. The second air outlet groove 312 is connected to the vent 101. Correspondingly, one end of two telescopic corrugated pipes 303 is fixedly installed on one side of the air outlet box 302, and the other end of the two telescopic corrugated pipes 303 is fixedly installed with the same air guide box 304. Both telescopic corrugated pipes 303 are connected to the air guide box 304, and the two telescopic corrugated pipes 303 are respectively connected to the first air outlet slot 311 and the second air outlet slot 312. An air guide pipe 305 is rotatably installed inside the air guide box 304, and the air guide pipe 305 has a first air outlet 306 and a second air outlet 307. The third air outlet 308 is connected to the connecting hole 320, which is connected to the first air outlet 306, the second air outlet 307, and the third air outlet 308. The second air outlet 307 is connected to the telescopic corrugated pipe 303 near the second air outlet slot 312. The first air outlet 306 is adapted to the telescopic corrugated pipe 303 near the first air outlet slot 311. A diverter pipe 309 is fixedly installed on one side of the air guide box 304, and the diverter pipe 309 is connected to the air guide box 304. The third air outlet 308... 08 is connected to the diversion pipe 309. One end of the diversion pipe 309 is fixedly installed with an air guide shroud 310. The air guide shroud 310 is fixedly installed on one side of the water tank 204. The semiconductor cooling chip 208 and the heat dissipation fins 211 are both located inside the air guide shroud 310. The air guide shroud 310 is connected to the diversion pipe 309. A U-shaped mounting bracket 313 is fixedly installed on the top side of the U-shaped connecting bracket 203. A fan 314 is fixedly installed on the top side of the U-shaped mounting bracket 313. The output end of the fan 314 is connected to the connecting hole 320.The heat generated inside the electrical control cabinet 100 is conducted to the heat absorber plate 200, which then conducts the heat to the heat conduction plate 201. The heat from the heat conduction plate 201 is then conducted to the heat conduction pipe 202. During this process, the water pump 205 can be turned on to draw water from the water tank 204 and circulate it through the heat conduction pipe 202. As the water flows through the heat conduction pipe 202, it carries away the heat from the heat conduction pipe 202, achieving heat exchange. Finally, the water returns to the water tank 204 through the other end of the heat conduction pipe 202, achieving recycling. The water in the water tank 204 gradually heats up during the continuous heat exchange process, and the water temperature is conducted to the temperature conduction plate 207. During this process, the semiconductor cooling chip 208 can be turned on to cool the temperature conduction plate 207 and the water in contact with it. In conjunction with turning on the fan 314, the output end of the fan 314 blows air into the connecting hole 320 on the air duct 305, causing the airflow to pass through the air duct 305. The heat dissipation fins 211 and heat pipes 210 inside the fan cover 310 remove heat from the heat dissipation fins 211 and heat pipes 210, dissipating heat from the heating surface of the thermoelectric cooler 208 and improving the cooling effect of the thermoelectric cooler 208. On the other hand, part of the airflow blown out by the fan 314 enters one of the telescopic corrugated pipes 303 through the second air outlet 307, and is finally blown out from the second air outlet slot 312 into the ventilation opening 101, so that the air can quickly circulate from the two ventilation openings 101 to exchange heat in the electrical control cabinet 100. During the heat exchange process, the motor 213 can be turned on to make the air outlet box 302 slide back and forth. When the air outlet box 302 slides, it will stretch the telescopic corrugated pipe 303 and drive the second air outlet slot 312 to slide. During the back and forth sliding of the second air outlet slot 312, the air can be blown evenly into the ventilation opening 101, improving the heat exchange effect.

[0038] The drive device includes a support frame 212. The support frame 212 is fixedly installed on the bottom side of the water tank 204. A motor 213 is fixedly installed on the support frame 212. A first pulley 214 is fixedly installed at the output end of the motor 213. A belt 215 is driven on the first pulley 214. Two second pulleys 216 are driven on the belt 215. Both second pulleys 216 are rotatably installed on the bottom side of the water tank 204. A linkage shaft 217 is fixedly installed on each of the two second pulleys 216. Both linkage shafts 217 are rotatably installed on the water tank 204. Multiple blades 218 are fixedly installed on each of the two linkage shafts 217. The blades 218 are located inside the water tank 204. A first bevel gear 318 is fixedly installed at one end of the linkage shaft 217. A second bevel gear 319 is fixedly installed at one end of the positive and negative threaded rod 301. The second bevel gear 319 meshes with the first bevel gear 318. The air guide box 304 has two guide holes 315. The second air outlet 307 is connected to the guide hole 315, and the first air outlet 306 is adapted to the guide hole 315. The air outlet box 302 has mounting bases 316 fixedly installed on both sides. The two mounting bases 316 have threaded holes 317. The two positive and negative threaded rods 301 are respectively threaded into the two threaded holes 317. Turning on the motor 213 enables its output end to drive the first pulley 214 to rotate. When the first pulley 214 rotates, it drives the two second pulleys 216 to rotate through the cooperation of the belt 215. The rotating second pulleys 216 drive the linkage shaft 217 to rotate, and the linkage shaft 217 drives the blades 218 to stir in the water tank 204, so that the water in the water tank 204 can flow and make full contact with the temperature guide plate 207, thereby improving the cooling effect of the water. The rotating linkage shaft 217 drives the first bevel gear 318 to rotate. When the first bevel gear 318 rotates, it drives the positive and negative threaded rod 301 to rotate through the meshing of the second bevel gear 319. The rotating positive and negative threaded rod 301 rotates on the two connecting seats 300. The continuously rotating positive and negative threaded rod 301 drives the mounting seat 316 to slide back and forth horizontally through the cooperation of the threaded hole 317, thereby causing the reciprocating sliding mounting seat 316 to drive the air outlet box 302 to slide.To guide the air blown out of the air guide box 304, two guide holes 315 are provided on the air guide box 304. The second air outlet 307 is connected to the guide hole 315, and the first air outlet 306 is adapted to the guide hole 315. When the fan 314 is turned on, the output end of the fan 314 blows air into the connecting hole 320 on the air guide duct 305, so that the airflow is delivered to the diversion pipe 309 through the third air outlet 308 on the connecting hole 320. On the other hand, part of the airflow blown out by the fan 314 will enter one of the telescopic corrugated pipes 303 through the second air outlet 307, and finally blown out from the second air outlet slot 312 into the ventilation opening 101. After the air guide duct 305 is rotated, the first air outlet 306 is connected to the telescopic corrugated pipe 303 and the first air outlet slot 311, while the second air outlet slot 312 is closed. At this time, the airflow can be blown to the bottom side of the metal protective canopy 403 through the first air outlet slot 311.

[0039] The snow-proof structure includes multiple guide rods 401, which are fixedly installed on the inner wall of the fixed frame 400. A movable support rod 402 is slidably installed on the guide rod 401. A metal protective canopy 403 is fixedly installed on the top side of the movable support rod 402. A connecting plate 404 is fixedly installed on one side of the movable support rod 402. Multiple arc-shaped blocks 405 are fixedly installed on one side of the connecting plate 404. A compression cylinder 406 is fixedly installed on one side of the air outlet box 302. A fixed frame 407 is fixedly installed at the output end of the compression cylinder 406. A roller 408 is rotatably installed on the fixed frame 407. The roller 408 is located on one side of the arc-shaped blocks 405. An electric heating tube 411 is fixedly installed on the inner wall of the connecting hole 320.

[0040] The movable support rod 402 has two guide sliding holes 409, and the two guide rods 401 are slidably installed in the two guide sliding holes 409 respectively.

[0041] A spring 410 is slidably sleeved on the guide rod 401. One end of the spring 410 is fixedly installed on the inner wall of the fixed frame 400, and the other end of the spring 410 is fixedly installed on one side of the movable support rod 402.

[0042] An adjusting cylinder 412 is fixedly installed on the top side of the U-shaped mounting bracket 313. A linkage rack 413 is fixedly installed on the output end of the adjusting cylinder 412. An adjusting gear ring 414 is fixedly installed on the air duct 305. The adjusting gear ring 414 meshes with the linkage rack 413. When used in winter when the ambient temperature is low, the fan 314 and the electric heating element 411 can be turned on separately. The airflow will be heated when it passes through the electric heating element 411 and finally blown into the electrical control cabinet 100 through the second air outlet 312 to heat the electrical components inside the electrical control cabinet 100. In winter, the metal protective canopy 403 can be used to block snow. If there is a lot of snow on the metal protective canopy 403, the regulating cylinder 412 can be turned on to connect the first air outlet 306, the telescopic corrugated pipe 303, and the first air outlet 311, while the second air outlet 312 is closed. Then the fan 314 and the electric heating element 411 are turned on so that the hot airflow blows through the first air outlet 311 to the bottom of the metal protective canopy 403 to heat the metal protective canopy 403 and accelerate the melting of snow. During the process, the motor 213 can be turned on to make the metal protective canopy 403 swing back and forth to shake off the snow on the metal protective canopy 403 and further improve the snow removal effect.

[0043] The working principle and beneficial effects of this invention are as follows:

[0044] During operation, the heat generated inside the electrical control cabinet 100 is conducted to the heat absorber plate 200, which then transfers the heat to the heat-conducting sheet 201. The heat from the heat-conducting sheet 201 is then transferred to the heat-conducting pipe 202. During this process, the water pump 205 can be activated, drawing water from the water tank 204 and circulating it through the heat-conducting pipe 202. As the water flows through the heat-conducting pipe 202, it carries away the heat from the pipe, achieving heat exchange. Finally, the water returns to its source at the other end of the heat-conducting pipe 202. Returning to the water tank 204, the water is recycled. During continuous heat exchange, the water in tank 204 gradually heats up, and this temperature is transferred to the temperature-conducting plate 207. During this process, the thermoelectric cooler 208 can be activated. Utilizing the characteristics of the thermoelectric cooler 208, it can simultaneously cool and heat. The cooling surface of the thermoelectric cooler 208 is in contact with the temperature-conducting plate 207, thus cooling the plate and consequently cooling the water in contact with it. Meanwhile, the thermoelectric cooler 208... The heating surface of plate 8 is in contact with the heat-conducting copper plate 209, allowing its heat to be conducted to the heat sink 210 and the heat sink fins 211. When the fan 314 is turned on, the output of the fan 314 blows air into the connecting hole 320 on the air duct 305. This airflow is then delivered through the third air outlet 308 on the connecting hole 320 to the distribution pipe 309, and then through the distribution pipe 309 into the air guide shroud 310, from which it is blown out. During this process, the airflow passes over the heat sink fins 211 and the heat sink within the air guide shroud 310. The heat sink 210 carries away the heat from the heat sink 211 and the heat sink 210, dissipating heat from the heating surface of the thermoelectric cooler 208 and improving the cooling effect of the thermoelectric cooler 208. On the other hand, part of the airflow blown out by the fan 314 enters one of the telescopic corrugated pipes 303 through the second air outlet 307, and is finally blown out from the second air outlet 312 into the ventilation port 101, so that the air can quickly circulate from the two ventilation ports 101 and exchange heat inside the electrical control cabinet 100.

[0045] During the heat exchange process, turning on motor 213 enables its output to drive the first pulley 214 to rotate. The rotation of the first pulley 214, in conjunction with belt 215, drives the two second pulleys 216 to rotate. The rotating second pulleys 216 then drive the linkage shaft 217 to rotate, which in turn drives the blades 218 to agitate within the water tank 204, allowing the water to flow and ensuring sufficient contact between the water and the temperature-conducting plate 207, thus improving the cooling effect. Furthermore, the continuously rotating linkage shaft 217 drives the first bevel gear 318 to rotate. When in motion, the positive and negative threaded rods 301 rotate through meshing with the second bevel gear 319. The rotating positive and negative threaded rods 301 rotate on the two connecting seats 300. The continuously rotating positive and negative threaded rods 301 drive the mounting seat 316 to slide back and forth horizontally through the engagement with the threaded hole 317. This causes the sliding mounting seat 316 to drive the air outlet box 302 to slide. When the air outlet box 302 slides, it stretches the telescopic bellows 303 and drives the second air outlet groove 312 to slide. During the back and forth sliding process of the second air outlet groove 312, air can be blown evenly into the ventilation port 101, improving the heat exchange effect.

[0046] When used in low winter temperatures, the fan 314 and heating element 411 can be turned on separately. The airflow is heated as it passes through the heating element 411 and finally blown into the electrical control cabinet 100 through the second air outlet 312 to heat the electrical components inside the cabinet. In winter, the metal protective canopy 403 can be used to block snow. If there is a lot of snow on the metal protective canopy 403, the regulating cylinder 412 can be turned on. The output of the regulating cylinder 412 will push the linkage rack 413 to move. The moving linkage rack 413 will then drive the regulating gear ring 414 to rotate through meshing with the regulating gear ring 414. The rotating regulating gear ring 414 will drive the air guide 305 to rotate within the air guide box 304. During the rotation of the air duct 305, the third air outlet 308 and the second air outlet 307 will move, disconnecting them from the telescopic corrugated pipe 303 and the diverter pipe 309, respectively. Simultaneously, the air duct 305 will connect the first air outlet 306 to the telescopic corrugated pipe 303 near the first air outlet slot 311. At this time, the first air outlet 306, telescopic corrugated pipe 303, and first air outlet slot 311 are in a connected state, while the second air outlet slot 312 is closed. Then, the fan 314 and the electric heating element 411 are turned on, allowing hot air to flow through the first air outlet slot 311 to the bottom of the metal protective canopy 403, heating the metal protective canopy 403 and accelerating its heating process. As the snow melts, the motor 213, activated during this process, causes the air outlet box 302 to reciprocate, evenly distributing hot air onto the metal protective canopy 403. Simultaneously, the reciprocating movement of the air outlet box 302 activates the compression cylinder 406. The output of the compression cylinder 406 moves the fixed frame 407, causing it to move the roller 408 into contact with the connecting plate 404. During the reciprocating movement of the air outlet box 302, the roller 408 moves accordingly, pressing against the arc-shaped abutment 405. This pressure on the arc-shaped abutment 405 causes the connecting plate 404 and the corresponding movable support rod 402 to move, thus enabling the movable support rod 402 to move in conjunction with the metal protective canopy 403. On the other side, the movable support rod 402 moves. During the sliding process, the movable support rod 402 slides on the guide rod 401 through the guide hole 409, thereby restricting the direction of movement of the movable support rod 402. During the movement, the movable support rods 402 on both sides will stretch or compress the corresponding springs 410. When the moving roller 408 disengages from the arc-shaped stop block 405, the arc-shaped stop block 405 is no longer compressed. The springs 410, which are in a stretched or compressed state, will move and reset by pulling the corresponding movable support rod 402. Thus, under the reciprocating compression of the roller 408, the metal protective canopy 403 can achieve a reciprocating shaking effect, so as to shake off the snow on the metal protective canopy 403 and further improve the snow removal effect.

[0047] Example 2, based on Example 1, further includes:

[0048] The area division module is used to divide the area within the electrical control cabinet 100 that requires fan cooling into several ventilation areas and to number the ventilation areas.

[0049] The third temperature sensor group is set up in each ventilation area. Each ventilation area has a corresponding third temperature sensor for the heat dissipation device. The third temperature sensor is used to detect the surface temperature of the heat dissipation device at its location.

[0050] The first wind speed sensor group is set up in each ventilation area. Each ventilation area has a corresponding first wind speed sensor for the heat dissipation device. The first wind speed sensor is used to detect the wind speed at its location.

[0051] The second wind speed sensor is used to detect the wind speed inside the second air outlet slot 312;

[0052] The fourth temperature sensor is used to detect the gas temperature inside the second air outlet slot 312;

[0053] A wind speed regulation assessment device, which operates periodically during the normal operation of the heat dissipation structure, includes:

[0054] The first control module is used to control the fan 314 to operate at rated power for a first preset time during each evaluation of the wind speed regulation evaluation device, and to control the third temperature sensor group, the first wind speed sensor group, the second wind speed sensor, and the fourth temperature sensor to operate multiple times within the first preset time.

[0055] The third calculation module is used to calculate the wind speed efficiency coefficient of the heat dissipation device based on the first wind speed sensor and the second wind speed sensor.

[0056] H kj v1 is the wind speed efficiency coefficient of the j-th heat dissipation device in the k-th ventilation zone; v1 is the average detection value of the second wind speed sensor within the first preset time period; v kj1 The average detection value of the first wind speed sensor corresponding to the j-th heat dissipation device in the k-th ventilation area within the first preset time period;

[0057] The fourth calculation module is used to calculate the first ventilation velocity corresponding to the heat dissipation device in each ventilation area based on the third calculation module and the third temperature sensor group;

[0058] T represents the first ventilation velocity corresponding to the j-th heat dissipation device in the k-th ventilation zone; kj1T is the average detection value of the third temperature sensor corresponding to the j-th heat dissipation device in the k-th ventilation area within the first preset time period; kj2 S represents the target operating temperature of the j-th heat-dissipating device in the k-th ventilation zone. kj Let J be the surface area of ​​the j-th heat-dissipating device in the k-th ventilation zone; Let N be the heat transfer coefficient of the j-th heat dissipation device in the k-th ventilation zone; F is the cross-sectional area of ​​the air outlet of the second air outlet 312 perpendicular to the air outlet direction; N k Let N be the total number of heat-dissipating devices in the k-th ventilation zone; ln is the natural logarithm; e is the natural constant; N k1 For the heat dissipation devices in the k-th ventilation zone The value is greater than the corresponding second preset value (some heat dissipation devices in the ventilation area may not be working or generate little heat, resulting in...). Smaller, when Larger components require reliable heat dissipation, therefore The larger,

[0059] The larger; Based on a preset function or Obtain the wind speed correction factor table; The distance between the current ventilation area and the second air outlet 312 is relatively small. In this case, to compensate for the loss of air velocity, it is necessary to increase the air velocity within the second air outlet 312. The total number of heat dissipation devices (increased); H k This represents the average wind speed efficiency coefficient of the k-th ventilation zone; for The corresponding wind speed correction factor; A is the specific heat capacity of air at constant pressure; B is the density of air; T1 is the average detection value of the fourth temperature sensor within the first preset time period; T kj The temperature of the air after it flows through the k-th ventilation zone within the first preset time period; ∈ kj T represents the average temperature difference of the j-th heat-dissipating device in the k-th ventilation zone within the first preset time period; W represents the total number of detections by the third temperature sensor within the first preset time period; T represents the average temperature difference of the j-th heat-dissipating device in the k-th ventilation zone within the first preset time period. kjm ' is the m-th detection value of the third temperature sensor corresponding to the j-th heat dissipation device in the k-th ventilation zone within the first preset time period; T kj(m-1) ' is the (m-1)th detection value of the third temperature sensor corresponding to the j-th heat dissipation device in the k-th ventilation area within the first preset time period; θ(∈ kj ) is ∈ kj The corresponding wind speed correction coefficient (based on a preset function or ∈) kj - Obtain the wind speed correction coefficient table;

[0060] The sorting module is used to sort the first ventilation speeds corresponding to the heat-dissipating devices in the ventilation area from largest to smallest, and determine the maximum value of the first ventilation speed corresponding to the heat-dissipating devices in the ventilation area as the target ventilation speed.

[0061] The second control module is used to adjust the actual power of the fan 314 to the target power. At the target power, the value detected by the second wind speed sensor is the target ventilation wind speed. Specifically, if the target power is greater than or equal to the current maximum allowable power of the fan 314, an alarm is triggered, prompting the fan to be replaced.

[0062] The beneficial effects of the above technical solution are as follows:

[0063] 1. During normal operation of the heat dissipation structure, the actual temperature state and required heat dissipation of the heat dissipation devices in different ventilation areas are different. In order to avoid the ventilation effect of some ventilation areas failing to meet the heat dissipation requirements, it is necessary to periodically adjust the wind speed in the second air outlet slot 312 through the wind speed adjustment evaluation device to meet the heat dissipation requirements of all ventilation areas and ensure the reliable operation of the entire electrical control cabinet.

[0064] 2. Since different ventilation zones correspond to different orientations of the second air outlet slot 312, their wind speed efficiency coefficients are different. The wind speed efficiency H is calculated based on the specific wind speed efficiency within the current first preset time period. kj And the theoretical heat dissipation parameters of the heat dissipation devices required in each ventilation area within the current first preset time period. Determine the theoretical heat dissipation air velocity for the heat dissipation components in each ventilation area. And based on the overall wind speed efficiency status of the entire ventilation area State requiring heat dissipation Temperature difference state ∈ kj The adjustments are made to obtain a suitable first ventilation velocity, which facilitates the final selection of a suitable target velocity and meets the heat dissipation needs of all heat-dissipating components as much as possible.

[0065] Example 3, based on Example 1 or 2, includes a hollow shell embedded within the air guide shroud 310, parallel to the heat-conducting copper plate 209. The air outlet side of the hollow shell is a certain distance from the heat dissipation fins 211. The air inlet of the hollow shell is connected to the branch pipe 309 via a main air inlet pipe. The heat-conducting copper plate 209 is divided into multiple heat dissipation fin areas, each with several heat dissipation fins 211 spaced apart. The hollow shell is equipped with several exhaust pipes facing the heat dissipation fins 211. Each heat dissipation fin area has at least one set of exhaust pipes, and each exhaust pipe is equipped with a first control valve. A supplementary air inlet pipe is located on the air inlet side of the exhaust pipe near the first control valve, and the supplementary air inlet pipe is connected to a second control valve. The electrical control cabinet of the thermal power plant also includes:

[0066] The third wind speed sensor group, each heat sink fin area corresponds to a third wind speed sensor group, the third wind speed sensor group includes several third wind speed sensors, the third wind speed sensors are used to detect the wind speed at their location.

[0067] The first temperature sensor group, each heat sink fin area corresponds to a first temperature sensor group, the first temperature sensor group includes a plurality of first temperature sensors, the first temperature sensors are used to detect the surface temperature of the heat sink fin 211 corresponding to the heat sink fin area.

[0068] The second temperature sensor is used to detect the gas temperature inside the shunt tube 309;

[0069] A flow sensor is used to detect the gas flow rate at the outlet of the exhaust duct.

[0070] The first evaluation device, which operates periodically, is used to evaluate the heat dissipation effect of the heat sink 211. The first evaluation device includes:

[0071] The first determining module is used to determine the target gas flow rate based on the average value of the detection value of the second temperature sensor within a second preset time period;

[0072] Q i T is the target gas flow rate for the i-th heat sink fin region; T3 is the average value of the detection values ​​of the second temperature sensor within a second preset time period; A is the specific heat capacity of air at constant pressure; B is the density of air; T 4i The temperature of the cooling gas after it flows through the i-th heat dissipation fin area (the first evaluation device operates periodically, and a corresponding temperature sensor can be set to acquire the temperature before the first evaluation device starts evaluation in the current cycle); W is the thermal power of the heating surface of the semiconductor cooling chip 208.

[0073] The third control module is used to control the first control valve so that the detection values ​​of each flow sensor are the target gas flow rates of the corresponding heat sink fin area, and blow air into the corresponding heat sink fin area for a third preset time. During the third preset time, the second temperature sensor, the third wind speed sensor, and the first temperature sensor are controlled to perform multiple detections.

[0074] The first calculation module is used to calculate the heat dissipation evaluation coefficient based on the first temperature sensor and determine the heat dissipation fin area with the heat dissipation evaluation coefficient greater than the first preset value as the abnormal heat dissipation fin area.

[0075] P i1 Let M be the heat dissipation evaluation coefficient for the i-th heat sink fin region; M be the total number of first temperature sensors for each heat sink fin region; T be the heat dissipation evaluation coefficient for the i-th heat sink fin region. ijT represents the average detection value of the j-th first temperature sensor within the third preset time period for the i-th heat sink region; T1 represents the target temperature after heat dissipation by the heat sink fins; max represents the maximum value; min represents the minimum value; T i1 For all T values ​​in the i-th heat sink region ij The standard deviation; ∝1 and ∝2 are the first and second coefficients, respectively (both with values ​​greater than 0 and less than 1); This reflects the state where the average heat dissipation effect is satisfactory. It reflects the temperature uniformity of the heat sink fin area. Abnormal temperature uniformity in the heat sink fin area can easily affect the service life of related components; the alarm module will issue an alarm when the number of abnormal heat sink fin areas exceeds a certain number.

[0076] The second calculation module calculates the supplementary flow rate of the abnormal heat dissipation fin area based on the detection values ​​of the second temperature sensor, the third wind speed sensor, and the first temperature sensor within a third preset time period when the number of abnormal heat dissipation fin areas is less than the first number.

[0077] q s G is the supplementary gas flow rate for the s-th abnormal heat dissipation fin region; G is the heat transfer coefficient of heat dissipation fin 211; E s T5 is the surface area of ​​the heat dissipation fin 211 in the s-th abnormal heat dissipation fin region; T5 is the average detection value of the second temperature sensor within the third preset time period; T 4s V represents the temperature of the cooling gas after it flows through the s-th abnormal heat dissipation fin area (a corresponding temperature sensor can be set to detect this within a third preset time period); s q is the average detection value of the third wind speed sensor in the s-th abnormal heat dissipation fin area within the third preset time period; s is the average detection value of the flow sensor within the third preset time period; D is the cross-sectional area of ​​the exhaust pipe outlet perpendicular to the axial direction; exp is an exponential function with the natural constant e as the base.

[0078] The fourth control module is used to control the operation of the second control valve corresponding to the abnormal heat dissipation fin area, so that the gas flow rate at the outlet of the second control valve is the supplementary gas flow rate.

[0079] The cooling gas entering the fan can use the same cooling gas source as the supplementary air intake duct;

[0080] The beneficial effects of the above technical solution are as follows:

[0081] 1. By setting up a hollow shell and an exhaust pipe directly facing each heat dissipation fin area, heat dissipation can be achieved directly to each heat dissipation fin area. This avoids the cooling air flowing through the split pipe 309, passing through the upper heat dissipation fin area, and then flowing through the lower heat dissipation fin area. This also prevents dirt and blockage in the upper heat dissipation fin area from affecting the ventilation volume of the lower heat dissipation fin area, thereby affecting the cooling effect of the lower heat dissipation fin area.

[0082] 2. Determine the target gas flow rate for each heat dissipation fin area based on the thermal power of the heating surface of the semiconductor cooling chip 208. Perform a heat dissipation test by blowing air at the corresponding target gas flow rate for a third preset duration (determining the target gas flow rate ensures that the determined gas flow rate matches the actual heating state and heat dissipation parameters, making the test more accurate) to determine the actual heat dissipation effect (heat dissipation evaluation coefficient) under the target gas flow rate. Identify abnormal heat dissipation fin areas with abnormal heat dissipation evaluation coefficients. If there are a large number of abnormal heat dissipation fin areas, an alarm will be triggered. At this time, the heat pipe 210 and heat dissipation fins 211 can be replaced and cleaned to ensure the heat dissipation effect of heat dissipation fins 211.

[0083] 3. When the number of abnormal heat dissipation fin areas is less than the first number, the supplementary flow rate for the abnormal heat dissipation fin areas is calculated based on the detection values ​​of the second temperature sensor, the third wind speed sensor, and the first temperature sensor within the third preset time period. The fourth control module controls the second control valve corresponding to the abnormal heat dissipation fin area to work, so that the gas flow rate at the outlet of the second control valve is the supplementary gas flow rate. This allows the entire electrical control cabinet to be shut down and the heat pipes 210 and heat dissipation fins 211 to be disassembled for cleaning when there are fewer abnormal heat dissipation fin areas. At this time, the cooling flow rate for the abnormal heat dissipation fin areas can be supplemented to ensure the cooling effect. At the same time, some abnormal heat dissipation fin areas can be cleaned with cleaning tools to reduce the amount of cleaning work.

[0084] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. An electrical control cabinet of a thermal power plant comprising an electrical control cabinet (100), characterized in that: The electrical control cabinet (100) is provided with a plurality of ventilation openings (101), and the inner wall of the electrical control cabinet (100) is fixedly installed with a heat absorption plate (200), the heat absorption plate (200) is installed with a heat dissipation structure, the top side of the electrical control cabinet (100) is symmetrically fixedly installed with four connecting seats (300), the four connecting seats (300) are installed with a ventilation structure, and the top side of the electrical control cabinet (100) is symmetrically fixedly installed with two fixed frames (400), the two fixed frames (400) are installed with a snow prevention structure.

2. An electrical control cabinet for a thermal power plant according to claim 1, characterized in that, The heat dissipation structure comprises a plurality of heat conduction sheets (201), the heat conduction sheets (201) are fixedly installed on one side of the heat absorption plate (200), the heat conduction sheets (201) are fixedly installed with heat conduction pipes (202), one side of the electrical control cabinet (100) is fixedly installed with a U-shaped connecting frame (203), one side of the U-shaped connecting frame (203) is fixedly installed with a water tank (204), one end of the heat conduction pipe (202) penetrates through the electrical control cabinet (100) and is fixedly installed on one side of the water tank (204), the heat conduction pipe (202) is communicated with the water tank (204), the other end of the heat conduction pipe (202) penetrates through the electrical control cabinet (100) and is fixedly installed with a water pump (205), the water pump (205) is fixedly installed with a water suction pipe (206), the water suction pipe (206) is communicated with the water tank (204), the inner wall of the water tank (204) is fixedly installed with a temperature guide plate (207), one side of the temperature guide plate (207) is fixedly installed with two semiconductor refrigeration sheets (208), the refrigeration surfaces of the two semiconductor refrigeration sheets (208) are in close contact with the temperature guide plate (207), one side of the two semiconductor refrigeration sheets (208) is movably installed with heat conduction copper plates (209), the heating surfaces of the two semiconductor refrigeration sheets (208) are respectively in close contact with the two heat conduction copper plates (209), one side of the two heat conduction copper plates (209) is fixedly installed with a plurality of heat dissipation pipes (210), and a plurality of heat dissipation fins (211) are fixedly installed on the heat dissipation pipes (210).

3. An electrical control cabinet for a thermal power plant according to claim 1, characterized in that, The ventilation structure includes two reverse toothed rods (301), two connecting seats (300) on the same side are rotatably installed on the same reverse toothed rod (301), a driving device is used for driving the two reverse toothed rods (301) to rotate, the same air outlet box (302) is threadedly installed on the two reverse toothed rods (301), the air outlet box (302) is slidably installed in a corresponding air vent (101), a first air outlet groove (311) and a second air outlet groove (312) are formed in the inner wall of the air outlet box (302), the second air outlet groove (312) corresponds to the air vent (101), one side of the air outlet box (302) is fixedly installed with one end of two telescopic corrugated pipes (303), the other end of the two telescopic corrugated pipes (303) is fixedly installed with the same air guide box (304), the two telescopic corrugated pipes (303) are in communication with the air guide box (304), the two telescopic corrugated pipes (303) are in communication with the first air outlet groove (311) and the second air outlet groove (312) respectively, the air guide box (304) is rotatably installed with an air guide pipe (305), the air guide pipe (305) is provided with a first air outlet (306), a second air outlet (307), a third air outlet (308) and a communication hole (320), the communication hole (320) is in communication with the first air outlet (306), the second air outlet (307) and the third air outlet (308), the second air outlet (307) is in communication with the telescopic corrugated pipe (303) on the side close to the second air outlet groove (312), the first air outlet (306) is matched with the telescopic corrugated pipe (303) on the side close to the first air outlet groove (311), one side of the air guide box (304) is fixedly installed with a shunt pipe (309), the shunt pipe (309) is in communication with the air guide box (304), the third air outlet (308) is in communication with the shunt pipe (309), one end of the shunt pipe (309) is fixedly installed with an air guide cover (310), the air guide cover (310) is fixedly installed on one side of the water tank (204), the semiconductor refrigeration sheet (208) and the heat dissipation fin (211) are located in the air guide cover (310), the air guide cover (310) is in communication with the shunt pipe (309), a U-shaped mounting rack (313) is fixedly installed on the top side of the U-shaped connecting rack (203), a fan (314) is fixedly installed on the top side of the U-shaped mounting rack (313), and an output end of the fan (314) is in communication with the communication hole (320).

4. An electrical control cabinet for a thermal power plant according to claim 1, characterized in that: The snow prevention structure comprises a plurality of guide rods (401), the guide rods (401) are fixedly installed on the inner wall of a fixed frame (400), a movable support rod (402) is slidably installed on the guide rod (401), a metal protection shed (403) is fixedly installed on the top side of the movable support rod (402), a connecting plate (404) is fixedly installed on one side of the movable support rod (402), a plurality of arc-shaped abutting blocks (405) are fixedly installed on one side of the connecting plate (404), an extrusion air cylinder (406) is fixedly installed on one side of the air outlet box (302), a fixed frame (407) is fixedly installed on the output end of the extrusion air cylinder (406), a roller (408) is rotatably installed on the fixed frame (407), and the roller (408) is located on one side of the arc-shaped abutting block (405); an electric heating pipe (411) is fixedly installed on the inner wall of the communication hole (320).

5. An electrical control cabinet for a thermal power plant according to claim 4, characterized in that: Two guide sliding holes (409) are formed in the movable support rod (402), and the two guide rods (401) are slidably installed in the two guide sliding holes (409) respectively; A spring (410) is slidably sleeved on the guide rod (401), one end of the spring (410) is fixedly installed on the inner wall of the fixed frame (400), and the other end of the spring (410) is fixedly installed on one side of the movable support rod (402).

6. An electrical control cabinet for a thermal power plant according to claim 3, characterized in that: A regulating air cylinder (412) is fixedly installed on the top side of the U-shaped mounting frame (313), the output end of the regulating air cylinder (412) is fixedly installed with a linkage rack (413), a regulating gear ring (414) is fixedly installed on the air guide pipe (305), and the regulating gear ring (414) is meshed with the linkage rack (413).

7. An electrical control cabinet for a thermal power plant according to claim 3, characterized in that: The driving device comprises a support frame (212), the bottom side of the water tank (204) is fixedly installed with the support frame (212), the support frame (212) is fixedly installed with a motor (213), the output end of the motor (213) is fixedly installed with a first belt pulley (214), the first belt pulley (214) is drivingly installed with a belt (215), the belt (215) is drivingly installed with two second belt pulleys (216), the two second belt pulleys (216) are both rotatably installed on the bottom side of the water tank (204), the two second belt pulleys (216) are both fixedly installed with a linkage shaft (217), the two linkage shafts (217) are both rotatably installed on the water tank (204), the two linkage shafts (217) are both fixedly installed with a plurality of blades (218), and the blades (218) are located in the water tank (204); one end of the linkage shaft (217) is fixedly installed with a first bevel gear (318), one end of the forward and reverse toothed rod (301) is fixedly installed with a second bevel gear (319), and the second bevel gear (319) is meshed with the first bevel gear (318).

8. An electrical control cabinet for a thermal power plant according to claim 3, characterized in that: Two guide holes (315) are formed in the air guide box (304), the second air outlet (307) is communicated with the guide hole (315), and the first air outlet (306) is matched with the guide hole (315). Both sides of the air outlet box (302) are fixedly installed with mounting seats (316), the two mounting seats (316) are provided with threaded holes (317), and the two positive and negative toothed rods (301) are threadedly installed in the two threaded holes (317) respectively.

9. An electrical control cabinet for a thermal power plant according to claim 3, characterized in that: Also includes: The area division module is used for dividing the area needing fan blowing and heat dissipation in the electrical control cabinet (100) into a plurality of ventilation areas, and numbering the ventilation areas; Each ventilation area is provided with a third temperature sensor group, and each ventilation area is provided with a third temperature sensor corresponding to the heat dissipation device; Each ventilation area is provided with a first wind speed sensor group, and each ventilation area is provided with a first wind speed sensor corresponding to the heat dissipation device; The second wind speed sensor is used for detecting the wind speed in the second air outlet groove (312); The fourth temperature sensor is used for detecting the gas temperature in the second air outlet groove (312); The wind speed adjusting evaluation device is periodically used in the normal working process of the heat dissipation structure, and the wind speed adjusting evaluation device comprises: The first control module is used for controlling the fan (314) to work at rated power for a first preset time length, and controlling the third temperature sensor group, the first wind speed sensor group, the second wind speed sensor and the fourth temperature sensor to work multiple times in the first preset time length during each evaluation of the wind speed adjusting evaluation device; The third calculation module is used for calculating the wind speed efficiency coefficient of the heat dissipation device based on the first wind speed sensor and the second wind speed sensor; The fourth calculation module is used for calculating the first ventilation wind speed corresponding to the heat dissipation device of each ventilation area based on the third calculation module and the third temperature sensor group; The sorting module is used for sorting the first ventilation wind speed corresponding to the heat dissipation device of the ventilation area from large to small to determine the maximum value of the first ventilation wind speed corresponding to the heat dissipation device of the ventilation area As the target ventilation wind speed; The second control module is used for adjusting the actual power of the fan (314) to the target power, and the detection value of the second wind speed sensor under the target power is the target ventilation wind speed.

10. An electrical control cabinet for a thermal power plant according to claim 3, characterized in that: The hollow shell is provided with a plurality of air exhaust pipes, the air exhaust pipes are arranged towards the heat dissipation fins (211), at least one set of air exhaust pipes is arranged in each heat dissipation fin area, and the air exhaust pipes are provided with a first control valve; the air inlet side of the air exhaust pipe provided with the first control valve is provided with a supplementary air inlet pipe, and the supplementary air inlet pipe is connected with a second control valve; the electrical control cabinet of the thermal power plant further comprises: The third wind speed sensor group is arranged in each heat dissipation fin area, and the third wind speed sensor group comprises a plurality of third wind speed sensors; the third wind speed sensor is used for detecting the wind speed at the location; A first temperature sensor group, each heat dissipation fin region corresponds to a first temperature sensor group, the first temperature sensor group includes a plurality of first temperature sensors, and the first temperature sensor is used for detecting the surface temperature of the heat dissipation fin (211) corresponding to the heat dissipation fin region; A second temperature sensor is used for detecting the gas temperature in the shunt pipe (309); A flow sensor is used for detecting the gas flow of the air outlet of the exhaust pipe; A first evaluation device periodically works and is used for evaluating the heat dissipation effect of the heat dissipation fin (211), and the first evaluation device includes: A first determination module is used for determining the target gas flow according to the average value of the detection value of the second temperature sensor within a second preset time length; A third control module is used for controlling the first control valve so that the detection value of each flow sensor is the target gas flow of the corresponding heat dissipation fin region, blowing the corresponding heat dissipation fin region for a third preset time length, and the second temperature sensor, the third wind speed sensor and the first temperature sensor are detected multiple times within the third preset time length; A first calculation module is used for calculating the heat dissipation evaluation coefficient based on the first temperature sensor, and determining that the heat dissipation fin region with the heat dissipation evaluation coefficient greater than a first preset value is an abnormal heat dissipation fin region; An alarm module alarms when the number of abnormal heat dissipation fin regions is greater than a first number; A second calculation module calculates the supplementary flow of the abnormal heat dissipation fin region based on the detection value of the second temperature sensor, the third wind speed sensor and the first temperature sensor within the third preset time length when the number of abnormal heat dissipation fin regions is less than the first number; A fourth control module is used for controlling the second control valve corresponding to the abnormal heat dissipation fin region to work, so that the gas flow of the second control valve outlet is the supplementary gas flow.

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